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156 Current news about the topic crystals

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When human and machine agree

A human research team and a machine learning algorithm have found that we need to rethink much of what we know about iridium oxide

14-Oct-2020

Iridium oxide is an excellent catalyst for electrochemical reactions, and is typically used for the production of energy carriers such as hydrogen from water. Now it turns out that research on iridium oxide carried out so far has been based on a wrong basic assumption: The arrangement of the ...

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When crystals throw sparks

Voltage can be used for chemical reactions: New model for pyroelectric reactions developed

14-Sep-2020

Pyroelectricity is a phenomenon in physics in which heat can be converted into electricity via certain crystals or into a voltage that can be used for chemical reactions. While the first application is already used in devices such as motion detectors today, the second application, although ...

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Painting with crystals

12-Aug-2020

Semiconductors made of organic materials, e.g. for light-emitting diodes (OLEDs) and solar cells, could replace or supplement silicon-based electronics in the future. The efficiency of such devices depends crucially on the quality of thin layers of such organic semiconductors. These layers are ...

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Chemists create the brightest-ever fluorescent materials

11-Aug-2020

By formulating positively charged fluorescent dyes into a new class of materials called small-molecule ionic isolation lattices (SMILES), a compound's brilliant glow can be seamlessly transferred to a solid, crystalline state, researchers report August 6 in the journal Chem. The advance overcomes ...

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Tellurium makes the difference

International research team discovers unusual molecular structures

10-Aug-2020

The periodic system contains 118 chemical elements. However, only a few of them, such as hydrogen, carbon, nitrogen, oxygen and silicon, are of major importance in our daily lives. But things become really exciting from a chemical point of view when less well-known elements are involved. An ...

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'Blinking" crystals may convert CO2 into fuels

Unusual nanoparticles could could be useful for environmental cleanups, sensors, electronic devices and solar cells

21-Jul-2020

Imagine tiny crystals that "blink" like fireflies and can convert carbon dioxide, a key cause of climate change, into fuels. A Rutgers-led team has created ultra-small titanium dioxide crystals that exhibit unusual "blinking" behavior and may help to produce methane and other fuels, according to ...

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Breakthrough in research on production of 2D crystals with excellent optical properties

Flat crystals showing uniform parameters over the entire surface, including - most valuably - excellent optical properties

25-May-2020

For the first time, monolayers of transition metal dichalcogenides with excellent optical properties were grown. A team of physicists from the University of Warsaw managed to overcome the technical difficulties faced by industry and scientists from around the world, namely the very limited size, ...

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Pretty as a peacock: The gemstone for the next generation of smart sensors

Method represents a simple, inexpensive and scalable approach to produce multi-functional graphene infused synthetic opals

20-May-2020

Scientists have taken inspiration from the biomimicry of butterfly wings and peacock feathers to develop an innovative opal-like material that could be the cornerstone of next generation smart sensors. An international team of scientists, led by the Universities of Surrey and Sussex, has ...

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Chemistry breakthrough could speed up drug development

12-May-2020

Scientists have successfully developed a new technique to reliably grow crystals of organic soluble molecules from nanoscale droplets, unlocking the potential of accelerated new drug development. Chemistry experts from Newcastle and Durham universities, working in collaboration with SPT Labtech, ...

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Not everything is ferromagnetic in high magnetic fields

12-Feb-2020

High magnetic fields have a potential to modify the microscopic arrangement of magnetic moments because they overcome interactions existing in zero field. Usually, high fields exceeding a certain critical value force the moments to align in the same direction as the field leading to ferromagnetic ...

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